sol_balance
SOL and SPL token balances (classic SPL Token + Token-2022) for a Solana wallet address, via public Solana RPC. Read-only. Price: $0.005 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/sol-balance
This record as markdown: /tools/com-it-scorptech-x402/sol-balance.md
What sol_balance does on ScorpTech x402 API
AI agents call sol_balance to retrieve information from ScorpTech x402 API without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | integer | — | Max token rows returned (largest UI balance first); default 100 |
address | string | Yes | Solana wallet address (base58, 32 bytes) |
include_zero | boolean | — | Include token accounts with a zero balance; default false |
include_token2022 | boolean | — | Also query Token-2022 program accounts; default true |
Parameters from the server's own tool schema.
Why sol_balance is rated Low
Even though sol_balance only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs sol_balance safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScorpTech x402 API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sol_balance, this is the rule to start with:
sol_balance is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ScorpTech x402 API, apply this rule, and every sol_balance call is checked against it from then on.
Questions about sol_balance
SOL and SPL token balances (classic SPL Token + Token-2022) for a Solana wallet address, via public Solana RPC. Read-only. Price: $0.005 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/sol-balance. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
sol_balance accepts 4 parameters: limit, address, include_zero, include_token2022. Required: address. The full parameter table on this page comes from the server's own tool schema.
Register the ScorpTech x402 API MCP server in PolicyLayer and add a rule for sol_balance: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches ScorpTech x402 API. Nothing to install.
sol_balance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sol_balance rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for sol_balance. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
sol_balance is provided by the ScorpTech x402 API MCP server (https://scorptech.it.com/api/x402/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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